> Indeed it is by design. If I get you right, if you get a NDN > (none-delivery-notification, or for the discussion, any other type of > message with empty sender, like out of office) which you can not > delivery, you like to bounce that? That is a recipe for trouble, meaning > you can play ping-pong all day long... Don't do it!
I want to discourage administrators of remote mail systems that are using me as a smarthost from sending these messages and if I direct the delivery failure notifications at them they should at least be made aware that they are generating these, which is a step in the right direction (my queue remaining un-polluted is a happy side-effect). The ID they authenticate with will always be a mailbox I control, so I would know for sure I can deliver mail there. Mailer in question handles authenticated SMTP relay only. -AL. -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
